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Abstract #1078

Biventricular and Hemodynamic Assessment under Multi-stage Exercise using Real-time CMR

Preethi S Chandrasekaran1, Chong Chen2, Yingmin Liu1, Christopher Crabtree3, Syed Murtaza Arshad4, Matthew Tong5, Yuchi Han5, and Rizwan Ahmad2
1Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, United States, 2Biomedical Engineering, Ohio State University, Columbus, OH, United States, 3Department of Human Sciences, Ohio State University, Columbus, OH, United States, 4Electrical and Computer Engineering, Ohio State University, Columbus, OH, United States, 5Cardiovascular Medicine, Ohio State University, Columbus, OH, United States

Synopsis

Keywords: Heart, Velocity & Flow, Exercise CMRA comprehensive exercise stress cardiovascular MRI (Ex-CMR) was performed in twelve healthy subjects. Biventricular quantification was performed from real-time cine, while hemodynamic parameters in the ascending aorta and main pulmonary artery were estimated using real-time flow. The acquisition process was repeated two to three times at increasing exercise intensities. The highly accelerated (R = 7-8 for cine and R = 16 for flow) real-time data were reconstructed inline using Gadgetron-based compressed sensing reconstruction. In agreement with the literature, the ejection fraction and cardiac output correlated positively with exercise intensity.

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Keywords